Home / 90,901.19-136,351.42-27,721.13

Finding the Fourth Proportional to 90,901.19, 136,351.42 and 27,721.13

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Solution

The fourth proportional to 90,901.19, 136,351.42 and 27,721.13 is: 41,581.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,901.19 : 136,351.42 = 27,721.13 : x
  2. Step 2: Convert to fraction form
    90,901.19/136,351.42 = 27,721.13/x
  3. Step 3: Cross multiply
    90,901.19x = 136,351.42 × 27,721.13
  4. Step 4: Simplify right side
    90,901.19x = 3,779,815,109.33
  5. Step 5: Solve for x
    x = 3,779,815,109.33/90,901.19
  6. Step 6: Final answer
    x = 41,581.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.